Messages in this thread | | | Date | Thu, 23 Apr 2015 14:41:34 -0400 | From | Eric B Munson <> | Subject | Re: [PATCH V2] Test compaction of mlocked memory |
| |
On Thu, 23 Apr 2015, Sri Jayaramappa wrote:
> Commit commit 5bbe3547aa3b ("mm: allow compaction of unevictable pages") > introduced a sysctl that allows userspace to enable scanning of locked > pages for compaction. This patch introduces a new test which fragments > main memory and attempts to allocate a number of huge pages to exercise > this compaction logic. > > Tested on machines with up to 32 GB RAM. With the patch a much larger > number of huge pages can be allocated than on the kernel without the > patch. > > Example output: > On a machine with 16 GB RAM: > sudo make run_tests vm > ... > ----------------------- > running compaction_test > ----------------------- > No of huge pages allocated = 3834 > [PASS] > ... > > Signed-off-by: Sri Jayaramappa <sjayaram@akamai.com> > Cc: linux-kernel@vger.kernel.org > Cc: linux-api@vger.kernel.org > Cc: Andrew Morton <akpm@linux-foundation.org> > Cc: Eric B Munson <emunson@akamai.com>
Reviewed-by: Eric B Munson <emunson@akamai.com>
[unhandled content-type:application/pgp-signature] | |